On 7/4/23 16:42, andrew beck wrote:
I would also help pay someone in a heart beat to fix the trajectory planner.
Some sort of jerk control would be awesome.
It doesn't need to be active in any special cases like spindle
synchronization but just if it worked for 4 axis simple motor at least
would be a game changer
I have no connection to tormach, but I've been doing synchronized y+b
motions involving about 30 turns of the B axis, absolutely synched to
the y axis motion at 12mm per turn, rotating B another 180 degrees and
caring my way back to the start 180 degrees different synch point to
make a 12mm pitch, 2 start 6mm buttress thread, successfully for about a
year. Cutting a that thread in a 22" hard maple 2x2. Where is the
problem I'm supposed to be having?
I'd post a pix to show it works, but JK has me blocked from posting any
attachments. I have not resurrected my web page, it was in the /opt
directory of a bullseye install when something changed my pw during an
apt upgrade. Locked out, no root pw was ever made, I had no choice but
to excavate the bookworm net-install dvd and re-install.
On Wed, 5 Jul 2023, 06:22 Martin Dobbins, <tu...@hotmail.com> wrote:
"If we could get hold of the patches that introduced it to Tormach then
we could look at integrating it"
Maybe a Tormach user could help with that?
Martin
________________________________
From: andy pugh
Sent: Tuesday, July 4, 2023 1:13 PM
To: EMC developers <emc-develop...@lists.sourceforge.net>
Cc: Enhanced Machine Controller (EMC) <emc-users@lists.sourceforge.net>
Subject: Re: [Emc-users] [Emc-developers] Trajectory planner shortcomings
On Tue, 4 Jul 2023 at 18:34, Marius <mar...@mastercut.co.za> wrote:
The problem seems to be that our trajectory planner lack the ability to
look ahead for any rotary axis. This means that a coordinated move that
includes a rotary move will be dysfunctional at best.
It's not as bad as that.
There is a 9-axis blending planner in Tormach, but it's not trivial to
merge it with Linuxcnc due to divergence in the codebase.
If we could get hold of the patches that introduced it to Tormach then
we could look at integrating it, but doing it just from comparing the
code sounds hard.
--
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses, daredevils and
lunatics."
— George Fitch, Atlanta Constitution Newspaper, 1912
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Cheers, Gene Heskett.
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-Ed Howdershelt (Author, 1940)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
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